Catherine Hanrahan

Radiation from the laptop connected to Wi-Fi was three times higher than without Wi-Fi, and at least seven times higher than control conditions.

USING a laptop connected to the internet via Wi-Fi could be decreasing men’s fertility by affecting their sperm quality, a new study suggests.

Researchers conducted a simple experiment comparing sperm samples from 29 healthy donors left under a Wi-Fi connected laptop computer for four hours with sperm samples kept away from any electronic device.

They found that progressive sperm motility was 80% in the control sperm compared with only 69% in the sperm sample exposed to the Wi-Fi laptop.

The drop in motile sperm corresponded to an increase in non-motile sperm of around 25% in the sperm exposed to the laptop, compared to 14% in the control sperm.

Similarly, more than twice the number of sperm, 8.6%, had fragmented DNA in the sample exposed to the laptop compared with only 3.3% of control sperm.

“Our findings suggest that prolonged use of portable computers sitting on the lap of a male user may decrease sperm fertility potential,” the authors from Argentina said.

Radiation from the laptop connected to Wi-Fi was three times higher than without Wi-Fi, and at least seven times higher than control conditions.

The authors speculated that the detrimental effect on sperm quality was due to radiofrequency electromagnetic waves, not a thermal effect, because temperature was controlled during the experiment.

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